This product has been tested for safety. Note the following precautions:
| WARNING Do not replace components when the system is powered up. Disconnect all power sources before performing maintenance procedures. |
| WARNING Do not substitute parts or modify the system, or install unsuitable parts in the system. Improper modification can damage the product or lead to malfunction. |
| WARNING Assess the risks from the installation work. Consider also the effects of local weather conditions. |
| WARNING Failure to comply with these precautions or with specific warnings elsewhere in these instructions violates safety standards of design, manufacture, and intended use of the product. Vaisala assumes no liability for the customer's failure to comply with these requirements. |
| WARNING If the equipment is used in a manner not specified by Vaisala, the protection provided by the equipment may be impaired. |
| WARNING Follow local and state legislation and regulations on occupational safety. |
| WARNING! Do not attempt to open the laser particle counter (LPC) for service. Removing the cover may cause exposure to harmful class 3B laser radiation and electrical shock. |
| CAUTION Improper modification can damage the product or lead to malfunction. Any modification voids your warranty. |